"Yes! I have finally done it! The only PokeBall of it's kind! The LOCKBALL!" a voice screamed into the dimness of his lab. This was a professor of the sorts, but a normal trainer would call him crazy. Professor Firsten was creating the first Pokeball that ONLY collected legendary types. The issues that he came up with in his lab were very minor but major, such as no proof of it working on a legendary pokemon. The lab was littered in these special lock balls. The pokeball was a metal type of pokeball that worked like a regular pokeball. However, once a lock ball was enlarged to fit a trainer's hand and used, once closed, the pokeball was locked with a special key at the back of the pokeball. It wasn't colored like a pokeball, but only kept the pokeball button and edge like one.
He went outside of his lab in the forest on Route 205 and wanted to test it out. He knew Mew showed up in random places, so he wanted to guess where it was. He heard the bushes rustle, and he threw his lockball. "GO! Pokeball!" The pokeball spun forward and a trainer showed up! To both of their surprizes, the trainer was hit with the pokeball at the button side, like a normal pokeball and the metal ball opened, and a blue light emitted from the ball, and then the trainer's body started to glow the same way. With a swoop, the trainer was sucked into the ball. Like a pokemon, the ball shook side to side and then the button turned blue, meaning a catch was made.
"Shit!"
He used his master key to unlock the pokeball and with a fright, the trainer fled the area. He looked at the trainer in confusion. He retreated back to his lab. He wasn't the only one to witness this. A Team Galactic grunt witnessed the entire scene. He silently went to his superiors to report the findings.
...
YO! I'm back! Yep I made a new story. I just had this one lingering in my head for a while though!